Computer keyboard



FIG. 1 is a front left perspective view of a computer keyboard;

FIG. 2 is a left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a back view thereof; and,

FIG. 6 is a top view thereof.

The ornamental design for a computer keyboard, as shown and described.